CMMG Bravo .22 LR Conversion Kit W/ One 25 Round Magazine Features: Just swap this drop in conversion with the bolt carrier group from your 5.56/.223 chambered rifle and you will be ready to shoot .22LR. Ships with 3 25rd magazines. For best performance use a round style hammer as notched hammers can cause function issues and 36 grain plated nose bullets have proven to be the best choice for function. CMMG Bravo .22 LR Conversion Kit W/ One 25 Round Magazine Specifications: CMMG DEFCAN 22 Rimfire Suppressor 22 LR Black Finish 1/2X28 Direct Thread CMMGDT-22